Rolling-mill



(No Model.) 3 Sheets-Sheet 1.

' G. P. LLOYD.

ROLLING MILL.

No. 394,122. Patented Dec. 4, 1888.

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3 Sheets-8heet 2.

(No Model.)

0. F. LLOYD.

ROLLING MILL.

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(No Model) s Sheets-Sheet a.

C. P. LLOYD.

ROLLING MILL.

No. 394,122. Patented Dec. 4, 1888.

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UNITED STATES PATENT OEEIcE.

CHARLES F. LLOYD, OF .IOI-INSTOVN, PENNSYLVANIA, ASSIGNOR TO THE JOHNSON STEEL STREET RAIL COMPANY, OF KENTUCKY.

ROLLING-MILL.

SPECIFICATIQN forming part of Letters Patent No. 394,122, dated December4, 1888.

Application filed Scptember15, 1888. Serial No. 285,468. (No model.)

To all whom it may concern:

Be it known that I, CHARLES F. LLOYD, of Johnstown, in the county ofCambria and State of Pennsylvania, have invented a new and usefulImprovement in Rolling-Mills, which invention is fully set forth andillustrated in the following specification and accompanyin g drawings.

The object of this invention is to facilitate the rapid changing of therolls, and, that delay shall not occur by reason of such change, therolls, with their entire housings, are lowered in and lifted out. ofplace, and so transported, instead of separately with accompanyingseparate parts.

The invention will first be described in de tail and then particularlyset forth in the claims.

In the accompanying drawings, Figure 1 illustrates in side elevation theplant in place ready for work. Fig. .3 shows in side elevation a set ofrolls and housings lifted out of place. Fig. 3 illustrates in endelevation the parts shown in Fig. 2.

In said figures the several parts are indicated by reference-letters asfollows:

The letter A indicates the housings R, the rolls fitted up in place; H,the guide-rests, and T the guide-plates located in the guide-rests. Theguides t are shown in place.

The drawings clearly show the caps which secure the rolls in thehousings, and their connections, of ordinary construction; hence suchneed not be described in detail. It will be observed that theguide-rests S S form connecting-pieces holdin the two parallel housingstogether at the bottom, their upper portions being held rigid by meansof the tiebolts U.

V indicates a four-sling chain, by means of which the lifting of thehousings and rolls all together is effected.

P indicates the bed-plate of the roll-train; N, the girders carrying thefeed-rollers K; 0, plates covering the open spaces 011 top of saidgirders, and H the removable feed-rolls immediately adjoining thehousings. These feedrolls are driven, preferably, by a chain belt, h,from a sprocket-wheel on the axle of the last fixed feed-roll K. Saidremovable feedrolls are provided with boxes .I, which boxes fit intocorrespondingrecesses in the standard The chain 71 is a comparativelyloose chain; hence by putting liners under the box J the l height ofsaid feed-rolls can be varied to suit the section being rolled, and thisconstruction also permits of the adjustable rollers II being swungquickly out of place, as shown in Fig. g 2, when it is desired to changethe main rolls. 3 The bolts (1. are hinged at I; by means of a pinpassing through the lugs I) h of the main bed-plate I. 'Ihebottoms orfeet of thehousings A are slotted at F, by means of which theholding-down bolts u can be swun into place and tightened down over thefeet E of the housings. It will beobserved that the under sides of thefeet E are beveled, as shown at g, in one direction. They are alsobeveled, as shown at e, in the other direction.

Referring to Fig. 3, it will be observed that the standards are beveledat c, and also that a small guide-piece, D, is provided and at tached tothe main bed-plate, which guidepiece is similarly beveled at (7.

Referring now to Fig 2, it will be observed that the bearing-surfaces ofthe main bedplate P are beveled, as at G G, to suit the bevel on theunder part of the feet E of the housing A. Guiding beveled surfaces arethus presented in every direction,which, 011 lowering the main housingsinto place, so guide them that a true seat is securedtwithout thenecessity of having an absolutelytrue point of suspension from the cranewhich does the lifting. The method of attachment to the crane by meansof the chain V is shown in Figs. 2 and The method of effecting a changeof rolls is as follows: Fig. 1 shows the housings in place as they areused for rolling. In the meantime another complete set of housings maybe fitted up at any suitable point, preferably on a false bed-plate orother support. These housings can be fitted up as completely as on themain bed-plate, the rolls screwed down and properly adjusted, the guidesfitted and put into place, and every detail prepared for work. \Vhen itis desired to change the mill from the rolling of one section of metalto another, the nuts on the bolts (1 are slacked and the bolts swungover on their centers B. The adjustable feed-rolls H are then lifted,boxes and all, and swung over out of their bearings, so as to rest uponthe plates 0. The housings and rolls complete are then vertically liftedout of place by the crane and removed, when another set, previouslyprepared, are lifted and lowered into place. The bolts a being thenswung into a bearing and tightened down, the adjustable feed-rolls areput back into place. As the housings are lowered into place, they areguided from all points toa true seat. This is essential to success, forit has been found in practice almost an impossibility to secure such atrue point of suspension from the crane in lowering the housings as toget their proper bearings without being guided, even with overheadcranes of the most modern construction. It has been found in practicethat a roll-change by this means can be effected in from eighteen totwenty minutes, whereas if the housings were left in place and therolls, carriages, guides, &c., lifted out and replaced separately, itwould take from six to eight hours to do the changing.

It will be observed that double bevels are shown in each direction forguiding the housings into their seats; but, if desired, but one set ofbevels would be sufficient for each part as, for instance, the bew elsgin the feet E could be retained on the inside edges and omitted fromthe outside edges of said feet.

I am aware that it has heretofore been suggested that a pair ofhousings, with the rolls in the same, should be lifted out for thepurpose of changing the rolls, and this I do not claim; but

As of my invention I claim 1. The combination of a bed-plate and removable roll-housings, said bed-plate and housings being provided withreverse beveled guiding-surfaces to intcrfit, substantially as and forthe purposes set forth.

2. In combination with a bed-plate and removable roll-housings providedwith slotted foot-flanges, as E, hinged bolts, as a, for securing thebed-plates and housings together, substantially as set forth.

3. A bed-plate for removable roll-housings, provided with side lugs, asb 19, substantially as and for the purposes set forth.

4. A bed-plate for removable roll-housings, provided with standards, asC, having beveled guides, as c, substantially as and for the purposesset forth.

5. In a roll-plant, an adjustable roll, as H, provided with alifting-box, as J, driven by a chain, as 71, substantially as and forthe purposes set forth.

6. A bed-plate for removable roll-housings, provided with beveledguide-pieces, as D, substantially as and for the purposes set forth.

7. A bed-plate for removable roll-housings, provided with beveledguides, as G, substantially as andfor the purposes set forth.

8. In combination with removable roll-housings provided with eyes, as 1four-part slingchains engaging said eyes for lifting, and lowerin g saidhousings, substantially as set forth.

CHARLES F. LLOYD.

Vitnesses:

I. E. ROBERTS, A. MONTGOMERY.

